Increasing backtrace entries

[JobHunts02@aol.com]

When I run gdb on a core dump after my application crashes, my backtrace  
consists of only 1 entry (see below).  Is there a way to increase the  number of 
entries in the backtrace so I can determine how I got to this  point?  Does 
only getting 1 entry in the trace indicate something?
 
GNU gdb 6.8
Copyright (C) 2008 Free Software Foundation, Inc.
License  GPLv3+: GNU GPL version 3 or later 
<_http://gnu.org/licenses/gpl.html_ (http://gnu.org/licenses/gpl.html) >
This  is free software: you are free to change and redistribute it.
There is NO  WARRANTY, to the extent permitted by law.  Type "show copying"
and "show  warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu  
--target=powerpc-linux"...
 
warning: exec file is newer than core file.
Cannot access memory at  address 0x6d61706c
(gdb) bt
#0  0x1003cc60 in wsrFind  (
reg_p=0x30284d9e <Address 0x30284d9e out of  bounds>, rxc=-1)
at lwc.c:4024
Cannot access memory  at address 0x30284d84
(gdb)




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